Painful menstruation affects many women. For a small number of women, the discomfort makes it difficult to perform normal household, job, or school-related activities for a few days during each menstrual cycle. Painful menstruation is the leading cause of lost time from school and work among women in their teens and 20s.

The pain may begin several days before, or just at the start of your period. It generally subsides as menstrual bleeding tapers off.

Although some pain during menstruation is normal, excessive pain is not. The medical term for excessively painful periods is dysmenorrhea.

There are two general types of dysmenorrhea:

Primary dysmenorrhea refers to menstrual pain that occurs in otherwise healthy women. This type of pain is not related to any specific problems with the uterus or other pelvic organs.

Secondary dysmenorrhea is menstrual pain that is attributed to some underlying disease or structural abnormality, either within or outside of the uterus.

Activity of the hormone prostaglandin, produced in the uterus, is thought to be a factor in primary dysmenorrhea. This hormone causes contraction of the uterus and levels tend to be much higher in women with severe menstrual pain than in women who experience mild or no menstrual pain.

Your health care provider may prescribe birth control pills to relieve menstrual pain. If you don't need them for birth control, you can stop using the pills after 6 to 12 months. Many women continue to have symptom relief even after stopping the medication.